Redfox---when you have tested your plan and feel it works as written
What drives me absolutely nuts about this entire requirement is that companies have been covering this in other ways since the dawn of the industrial age. We all know the incident of sever recalls has not moved much since the 1960's and previous to that the rate of manufacture was very low.
Yes 1 employee at a Kellogg plant filmed himself peeing all over the food and equipment, yes that is absolutely vial and should not have happened; however, while it is a food safety risk, it's also a HR issue. They've ask the food safety people to take care of employee issue----this is not our mandate NOR SHOULD IT BE
Disgruntled employees should be properly managed by the supervisors and watched like a hawk when it comes to light they are motivated by anything other than a pay cheque. If an employee gives you pause about what they may do to your product, whether it's food or car brakes or children's toys, they need a looooong vacation.
Facilities that have already been running a robust hacpp plan, will have already covered this off at least once. And i don't know about anywhere else in the world, but where I live, the province has laws about my personnel safety at work, so they are to ensure no harm comes to employees (which means no strangers wandering around)